df <- data.frame( id = c(rep("Rodney",5), rep("Sarah",5)),
Data = rnorm( 10, 42, 42),
Longitude = rnorm(10, -78, 1 ),
Latitude = rnorm(10, 37, 1) )
df id Data Longitude Latitude
1 Rodney 44.9109790 -77.56533 37.43682
2 Rodney 96.5076474 -76.98142 37.08636
3 Rodney -0.1574075 -77.00077 36.53849
4 Rodney 67.0709331 -78.38705 37.69608
5 Rodney 50.4716367 -76.83909 38.68547
6 Sarah 78.4558138 -76.00292 37.23790
7 Sarah 14.1378386 -77.08214 37.27219
8 Sarah 35.5472722 -76.03088 37.34282
9 Sarah -13.9135207 -79.11249 35.79776
10 Sarah -6.1547772 -77.54399 36.66140